Road-scraper



2 Sheets-Sheet 1.

(No Model.)

0; E. KILPATRIGK.

ROAD SGRAPBR.

N0. 365,923. Patented July-5, 1887.

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(No Model.) 2 Sheet sSheet 2..

. O. E. KILPATRIGK.

ROAD sc RAPBRi Patented July 5, 1887.

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UNITED STATES .ATENT tries.

ROAD-SCRAPER.

s'PncIPIcATIoN forming part of Letters Patent No. 365,923, dated July 5, 1887.

Application filed March 4, 1887.

To all whom it may concern:

Be it known that I, CALVIN E. KILPATRIOK, of Tallmanville, in the county of Wayne and State of Pennsylvania, have invented certain new and useful Improvements in Road'Scrapers; and I do hereby declare the following to be a full, clear, and exact description of the same, reference being had to the accompanying drawings, forming a part of this specification, and to the figures and letters of reference thereon.

My present invention has for its object to improve that class of road-scrapers used for leveling and rounding up the surface of ordinary roads and for scraping together loose earth for the purpose of removing it; and the said invention consists, first, in mechanism whereby the scraper-bar may be easily adjusted vertically; secondly, in mechanism for easily reversing the scraper-bar so as to move the dirt in either direction; and, thirdly, in certain details of construction, to be hereinafter described, and pointed out particularly in the claims at the end of this specification.

In the accompanying drawings, Figure I is a side elevation of the machine, the fore part of the frame and front wheels being broken away. Fig. 2 is a top plan view of the same. Fig. 3 is a section through one of the posts or standards in which the raising-levers for the scraper'bar are pivoted, taken at right angles to said lever. one-half of the post and connections, the lever being removed. Fig. 5 is a top plan view of the post.

Similar letters of reference in the several figures indicate the same parts.

A represents the iron side framing, extending from the front bolster back to the rear axle, where it is rigidly attached and has bolted to it four uprights, a, the upper ends of which serve to support the frame B,on which the shi fting mechanism for the scraper-bar is mounted, and their lower ends as braces for the scraperbar itself, as will be presently described. The

frame B is preferably formed of four timbers bolted together in the form of an oblong, to the top of which is secured two iron segments of a circle, 0, having rows of cog-teeth d thereon, preferably standing above the general surface of the segment. On the tracks formed by the segments 0 are posts or standards D,

Fig. at is an enlarged view of Serial No. 229,717. (No model.)

in which the raising and lowering levers E are pivoted by means of bolts 0, said levers being retained in adjusted position by the engage ment of the pawl c with the teeth f on therear side of the post or standard. In constructing these posts they are preferably cast in halves, as shown in Figs. 3 and 4-, with recesses in the basefor the reception of cog-wheels F and anti friction rollers G. (Shown'in Figs. 3, i, and 5.) When the posts or standards are in adj usted position, they are held by set-screws H, which pass through their bases and screw into the segments 0 or into nuts located beneath them, as will be readily understood. The shaft 9 of the cogwheel F turns in bearings in the standards and is squared on one end for the reception of a crank or key, 71 (seen in dotted lines, Fig. 4;) and formed on the post or standards on the inside, near the bottom, are arms D, which pass around under the segments and have on their ends anti-friction rollers rl,for engagement with the bottom of the segments, to hold the posts or standards in position while being shifted, as well as to aid in strengthening them when the scraper-bar is manipulated.

Attached to the scraper-bar I by means of bolts i are'two upright supports or hangers, K, which, through the medium of the levers E and connections, support the entire weight of the scraper-bar, as will now be explained. To the top of the uprights or hangers K are journaled wheels or disks M, around the periphery of which are a series of holes, m, which register with holes in the uprights; and to one side of the disks, preferably in one of the end holes of the series, are attached arms is, the other ends of which are connected to the lovers E. A pin, 1, passing through one of the holes in the disks and into the upright K, prevents the rotation of the disks when it is desired to force the scraper-bar down, raise it, or hold it in adjusted position. The uprights K at the top slide in supports N, bolted or otherwise secured to the sides of the posts or standards D, and at the bottom the rear upright rests against the grooved anti-friction wheel 0,

journaled in the lower end of upright a, and

IOO

, scraper-bar.

In order to sustaih the strain thrown upon them by the scraper-bar, the uprights a havev braces Q,extending from neartheir lower ends diagonally up to the frame A. Y

The scraper-bar proper isthe only part that now remains to be described. It is usually formed of wood, with pointed cast-iron plates R secured to the bottom, said plates in turn having similarly-shaped pieces of steel, r, secured to their lower edges. The advantages of this construction are obvious. cutting-edge of the section forming the plowpoint is worn off, it may be removed and put in the place of one of those in the center of the bar, the latter taking its place and forming the point; or, instead of changing the whole point, the steel portion only'may be changed.

The operation of the machine is as follows: Assuming that the machine is in the position shown in Fig. 1that is to say, with the scraper bar raised for transportation and pointed so as to move the dirt toward the left when it is desired to lower it for operation, the operator, standing on floor Z, withdraws pawls e on levers E and lowers the upright K and In this position the pawl would i be above the teeth f on the post D, and the scraper-bar, not being held down, would rise when any slight obstruction is met. In order, then, to bring the pawl within range of the teethf, I withdraw the pins Z, then rotate the disks M the required distance and insert the pin in a new hole. This moves the lever down and brings the pawl within range of the teeth. By this arrangement it will be seen that I am enabled to use a very much more powerful lever and at the same time obtain even a greater range of movement than could be obtained were a long lever employed and the arm 7c connected directly to the upright K. The sliding section P is usually left in the low position,preferably below the point of connection between the upright and scraper-bar, except when it is desired to reverse. It is then raised, and after the bar has been reversed the opposite section is lowered to said point. The object in supporting the upright K below its point of connection with the scraper-bar is to prevent its being bent and obstructed in its free up and down movements. WVhcn it is desired to reverse, so as to move the dirt toward the right, I first .remove the set-screws H and raise the uprights P above the top of the scraper-bar, said bar of course being hung soas to not quite touch the ground. Handles or cranks are then'applied to the squared ends of the shaft 9 of the cog-wheels F, and said wheels rotated in a direction to move the posts along on the tracks formed by the segments, and of course moving the scraper-bar, which is suspended from said posts,until a point is reached at right angles to its former position. This done, the section P on that side is lowered behind the upright K and the set-screws H applied. 13y reference to Fig. 3 it will be seen that the cogs or When the teeth on the segments project within'grooves in the base of the post D, which, in conjunction with the arm D on the one hand and the weight of the scraper-bar onthe other, prevents the posts from slipping off the track sidewise. The bolt 13, connecting the upright K and scraper-bar, preferably passes through a slot in the latter, was to' allow of its being shifted longitudinally when it is desired to reach fart-her out to one side or to distribute the weight of the scraper'bar evenly upon each of the uprights.

Having thus described my invention, what I claim as new is '1; The combination, with the main frame having tracks or ways thereon, of the scraperbar hung on said tracks and uprights or braces for said scraper-bar located at each extremity of its movement in either direction, as set forth. g

2. In aroadscraper, the combination, with tracks or ways having gear-teeth thereon secured to the main frame, of posts provided with gear-wheels mounted on and-engaging said tracks, and having levers pivoted thereto, which in turn support the scrapcrbar, sub stantially as described.

3. In a road-scraper, the combination, with the main frame and tracks or ways thereon, upon which the reversing mechanism is mounted, of gear-teeth on said tracks or ways with which gear-wheels on the reversing mechanism engage, as set forth.

4. In a road-scraper, the combination, with the main frame and tracks or ways mounted rigidly thereon, upon which the reversing mechanism is mounted, of means, substantially as described, for holding said reversing mechanism in adjusted position and wheels for engaging said tracks or ways for moving it when said wheels are turned, as set forth.

5. In a road-scraper, the combination, with the main frame, of gear-tracks on said frame and reversing mechanism mounted on the tracks, the gear-teeth on said tracks serving to prevent the lateral displacement of the re versin g mechanism, substantially as described.

6. In a roadscraper, the combination, with the main frame and tracks or ways mounted thereon, upon which the posts of the reversing mechanism move, of an arm or arms on said posts for engaging the under side of said tracks or ways and holding the posts in upright position while being moved, substantially as described. 7

7. In a road-scraper, the combination, with the main frame and scraper-bar, of mechanism for raising and lowering the latter, consisting of an upright or support for the scraperbar, a lever or equivalent device connected to said upright or support through an intermediate 'arm, and means for changing. the point of attachment between the intermediate arm and upright, as set forth.

8. In a road-scraper, the combination, with the main frame and scraper-bar, of mechanism for raising and lowering it, consisting of IIC an upright or support connected thereto, and a lever or its equivalent connected to said upright through an intermediate adjustable disk or equivalent device, substantially as described.

9. In a road-scraper, the combination, with the main frame and scraper-bar, of mechanism for raising and lowering the latter, consisting of an upright or support connected thereto, and a lever or its equivalent connected to said upright throughan intermediate arm and adjustable disk, substantially as described.

10. In aroadscraper, the combinatiomwith the frame connecting the front bolster with the rear axle, of a frame above said firstmentioned frame supported by means of uprights, the lower ends of which form braces to receive the thrust of the scraper-bar, substantially as described.

11. In aroad-scraper, the combination, with the main frame, of a scraper-bar connected thereto through hangers or uprights, the bolts connecting the uprights, and scraper-bar passing through slots in the latter, whereby it may be moved longitudinally of its supports, substantially as described.

12. In a road-scraper, the combination of a main frame, ascraper-bar, and braces therefor, consisting of a movable and a stationary section, said stationary section being cutoff above the topof the said scraper-bar, substantially as described.

13. In a road-scraper, the combination of a main frame, a scraper-bar, suspending-bars, and means for securing them to the scraperbar,witl1 vertically-adjustable braces for the suspending-bars, substantially as described.

'14. In a road-scraper, the combination of a main frame, a scraper-bar, suspending-bars, and means for securing them to the scraperbar, with braces for said suspendingbars h aving one portion thereof vertically adjustable and bearing a friction-roller for contact with the suspending-bars,whereby the thrust of the scraper-bar is received at or below its connection with the suspending-bars, substantially as described.

15. In a road-scraper, the combination of a main frame, a scraperbar, suspending-bars,

and means for securing said bars to the scraperbar, with verticallyadjustable supportingposts having anti-friction rollers for bearing against the suspending-bars, substantially as described.

0. E. KILPATRICK.

Witnesses:

A. S. STEUART,

FRED F. CHURCH, 

